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All Journal Media Teknik Sipil Jurnal Teknik Sipil Kumawula: Jurnal Pengabdian Kepada Masyarakat Journal La Multiapp Matriks Teknik Sipil Sustainable Civil Building Management and Engineering Journal
Hadiani, Rr. Rintis
Program Studi Teknik Sipil FT UNS
Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Engineering Materials Science & Nanotechnology Social Sciences

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Journal : Journal La Multiapp

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Semi Cascade Dam Operation for Flood Control at Pacal Dam and Gongseng Dam Zahari, Renalvin; Sobriyah, Sobriyah; Hadiani, Rintis
Journal La Multiapp Vol. 6 No. 4 (2025): Journal La Multiapp
Publisher : Newinera Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37899/journallamultiapp.v6i4.2272

Abstract

The existing condition of the Pacal Dam is experiencing swallowing due to sedimentation, resulting in a reduction in storage capacity.The construction of the Gongseng Dam is a solution to this problem.Pacal Dam and Gongseng Dam are semi-cascade dams whose management is an integration of different rivers. Hydrological analysis was carried out to obtain the Inflow hydrograph using the Nakayasu HSS Method using the discharge value at a 500-year return period (Q500). To determine the optimal capacity in flood control, a simulation of the operation of the Pacal Dam gate was carried out using the Level Pool Routing method on each dam. There are four scenarios simulated in the operation of the Pacal Dam spillway gate, namely the gate is completely closed (scenario 1), the gate is opened 50% (scenario 2), the gate is opened 75% (scenario 3), and the gate is fully opened (scenario 4). The simulation results show that in scenario 1 the Pacal dam is not safe, with a maximum outflow discharge value of 72.12 m3/dt with a water level above the spillway of 6.16. In scenarios 2, 3, and 4, the outflow discharge value is 80.39 m3/dt, 113,49 m3/dt, 143,62 m3/dt with water height above the spillway of 2.68 m, 2.37 m, 2.14 m. The results of the simulation of the operation of scenarios 1, 2, 3, and 4 of the Gongseng Dam routing are safe with a maximum outflow discharge value of 260.15 m3/dt, 280,89 m3/dt, 297,90 m3/dt, 319, 38 m3/dt and water height of 1.98 m, 2.08 m, 2.16 m, 2.27 mon spillway landmark. The best scenario is scenario 4 considering the height of the guard water on the spillway.
Co-Authors A.A. Ketut Agung Cahyawan W Aditama, Festy Agus Hari Wahyudi Agus Wahyudi Ahmad BS, Abdul Ghoffar Andromeda, Virdya Nurlaily Ardiputro, Riyan Arin, Rifka Annisa As'ad, Sholihin Avicenna, Andi Khalifa Bayu, Ridwan Kresna Dananjaya Hesti I, Raden Harya Dananjaya Hesti I, Raden Harya Dwi Utami Dwinanda, Ramadhani Febrian Eko Prasetyo, Heri Eko Yulianto, Frandy Eratika Ginting, Jonas Ery Suryo Kusumo Fidiawan, Nuansah Firmanda, Yopi Adi Handayani, Marita Putri Hapsari, Shabrina Ishadi, Nabilla Khairunnisa Jadmiko, Sigit Jadmiko, Sigit Jayanti, Vicky Tri Jayanti Kundarto, Rahmat Kundarto, Rahmat Kurniawan, Fendika Titok Kurniawan, Pengkuh Jalu Kurniawan, Riswandha Dwi Laksono Trisnantoro Muttaqien, Adi Yusuf Natanhia, Belinda Rosa Natanhia, Belinda Rosa Pediano, Dhiky Pratama, Bagas Hendi Pratama, Bayu Yoga Purnomo Putro, Julian Wahyu Purwantoro, Bagas Dwi Putri, Elsa Sellyana Raden Harya Dananjaya, Raden Harya Rafdi, Muhammad Abi Rahadi, Rizky Setyo Rahmawati RW, Esthi Raka Buana, Muhammad Zean Raka Buana, Muhammad Zean Rakhmawati, Tsani Rosari, Bertania Kartikaning Tiyas RW, Esthi Rahmawati Saido, Agus P. Saido, Agus P. Saido, Agus Prijadi Setia Aji, Dewanti Anggit setiono setiono Setiono Setiono Shakti, Danang Wibawa Sholi, Imam Nor Sobriyah Sobriyah Solichin Solichin Suncaka, Bintang Suryandari, Endah Sitaresmi Suryandari, Endah Sitaresmi Susilowati Susilowati Suyanto Suyanto Tarigan, Berklyson Utomo, Edo Suryo Wahyu, Destiana Wardanu, Hanif Satria Wardhani, Putri Pramudya Waskito, Sigit Nur Werdiningtyas, Ratri Wibisono, Chandra Wicaksana, Chrisna Justice Wicaksanti, Warakesthi Rahayu Zahari, Renalvin